Exam 1: Cosmology and the Birth of Earth

The process of differentiation results in all of the following EXCEPT ________.

Compared to our Sun,first-generation stars tend to be ________.

Differentiation of the core from the mantle early in Earth's history was possible because the planet was ________ at the time.

Strong evidence that the Universe is expanding comes from the fact that the light emitted from nearly all distant galaxies appears to be ________.

Scientists believe that the Moon formed due to a large planetesimal colliding with the Earth because it has a composition similar to ________.

According to the Big Bang theory,our Universe is ________.

Which of the following is NOT considered a Jovian planet?

An important contribution made by Copernicus is his (correct)assertion that the ________.

Researchers have determined that the Universe began expanding after the Big Bang.When did the Big Bang event occur?

The closest galaxy to ours is ________,which is ________ million light years away.

The circumference of Earth is most nearly ________.

The figure below shows a moving source of light with four stationary observers at different locations.Which observer will see red-shifted light from the moving source

Foucault's experiment with a pendulum proved that ________.

Atoms that are heavier than iron are generally produced by ________.

Humans first realized that the Earth was spherical ________.

The metal alloy that makes up the core of Earth is ________,as compared to the rocky mantle.

The Big Bang theory states that ________.

The Jovian planets are ________.

A light year is a unit that measures ________.

The images below show two different nuclear reactions.The left image shows ________ while the right image shows ________.